VENTILATION STRATEGY FOR BUILDINGS ADJACENT MAIN ROADS
In the present investigation, the effect of traffic pollutions on indoor air quality of buildings using different ventilation mode is evaluated using computational fluid dynamics technique. The emission rate of vehicles is determined using a semiempirical model, and the three-dimensional (3D) airflow and dispersion of pollutants were modeled using the RNG k-ε turbulence model. It is found that pollutant concentration on buildings roof and back facade are lower than that on the front facade (the facade facing the street). For mechanical ventilation system, locating air intakes in these regions can effectively reduce the adverse effect of outdoor pollutant. However, low pressure is also observed at these regions on downstream buildings envelop, so the natural ventilation effectiveness may be small when all openings are located in them. It is also found that suitable natural ventilation design can lowering incoming vehicle pollutants and maintaining an acceptable air change rate.
Traffic-related pollutant CFD RNG k-ε model Ventilation strategy
Jing Liu Jianing Zhao Dexing Sun
School of Municipal & Environmental Engineering, Harbin Institute of Technology Harbin 150090, China
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）